Welcome to HVAC-Talk.com, a non-DIY site and the ultimate Source for HVAC Information & Knowledge Sharing for the industry professional! Here you can join over 150,000 HVAC Professionals & enthusiasts from around the world discussing all things related to HVAC/R. You are currently viewing as a NON-REGISTERED guest which gives you limited access to view discussions

To gain full access to our forums you must register; for a free account. As a registered Guest you will be able to:

Participate in over 40 different forums and search/browse from nearly 3 million posts.

The boot should be flush with the floor...otherwise it will stick past and the register won't be flush. Carmon said nails but I use screws. Easier for me to get my drill with a flex bit into a 6x12 hole than it is for me to swing a hammer. Also, there will be air gaps in between the boot and the subfloor. A metal backed or better hardcast tape should be used to seal these leaks.

The boot should be flush with the floor...otherwise it will stick past and the register won't be flush. Carmon said nails but I use screws. Easier for me to get my drill with a flex bit into a 6x12 hole than it is for me to swing a hammer. Also, there will be air gaps in between the boot and the subfloor. A metal backed or better hardcast tape should be used to seal these leaks.

So the boot should come up flush to the finish floor? How do you attach screws because my screw gun wont really fit in a small area like to drive a good screw in. Do you mean foil tape for sealing duct joints?

i prefer to protrude the boot over the floor a half in or so, then flange it over the floor w cleet bender..then simply nail to floor

I've never seen this done but I really like your idea. Usually the boots are bent and beat up, barely hanging onto the floor, about to drop to the dirt. This would hold itself in, and also the registers would slide right in.

Again with the old 1960s houses, they usually have 1 nail per side, driven half way in, then hammered over. They are always beat up from people removing/replacing registers and most are a fight to get back in.

Again with the old 1960s houses, they usually have 1 nail per side, driven half way in, then hammered over. They are always beat up from people removing/replacing registers and most are a fight to get back in.

well if you install them like a rookie I guess there will be troubles.... lots of ways to do it.... we have done it the simple way for years and years...

it was working.... played with it.... now its broke.... whats the going hourly rate for HVAC repair